Atomizing device for pulverulent material



Nov. 26, 1929. Q GREISER 1,736,969

ATOMIZING DEVICE FOR PULVERULENI' MATERIAL File d May 25, 1928 FI'g./.

Patented Nov. 26, '1929 UNITED STATES PA ENT OFFICE ERICK GBEISEB, F BERLHT-NEUKOLLN, GERMANY ATOHIZIiNG DEVICE FOR PULVEBULEN'I. MATERIAL Application filed Kay 25, 1928, Serial No. 880,570, and in Germany December 15, 1927.

This invention relates to a device for at-' omizing pulverulent materials. It is operated by com ressed air and its distinguishing feature y which it excels the known devices of which I am aware is this that only a part of the compressed air used for the atomizationis conducted directly to the atomizing device proper which however, does not form a part of this invention.

The present invention proper is illustrated diagrammatically and by way ofexam le on the accompanying drawing, on which igure '1 is a side-view thereof, chiefly in vertical section and Figure 2 is a separate view drawn to an enlarged scale and showing certain members located in the receptacle shown in section in Fig. 1'.

On the drawing, 2 (Fig. 1) is a hose through which compressed an is led into the receptacle 22 containing the pulverulent material to be atomized. The connection between said hose and the receptacle is eifect'ed by the intermediary of the tube 4 arranged in said receptacle, a tubular member 6 to which the end of the hose is attached, and a regulating valve 3, by the casing of which said parts 6 and 4 are connected with one another. The tube 4 extends horizontally a little over the bottom of the receptacle 22 and forms at its end, within this receptacle, a nozzle 3". In front of this nozzle are a few openings 4 through which a certain small part of the compressed air can pass into the receptacle 22, i. e. into the pulverulent material therein contained (not shown), and can whirl up this material. This latter can be introduced into the receptacle through a large opening provided in the top of the same and closed normally by a threaded cover 23.

The nozzle 3" extends into the horizontal end of an approximately S-shaped tube 5 extending upwardly into the receptacle 22 and being provided at its free end with a funnel-shaped casing 5 closed at its large end by a sieve 5". The mixture of compressed air and pulverulent material filling the receptacle 22 is sucked away through the sieve 5 and the casing 5, as well as through the pipe 5, and driven by the nozzle 3 into a tubular member 24 through which the atomized pulverulent material is expelled.

I claim:

1. An atomizing device for pulverulent material, comprising, in combinat1on, avessel 5 adapted to receive said material, a pipe passing through said vessel and forming a nozzle at its end and having a few small apertures, meansfor introducing compressed air into said pipe from the other end; a second pipe arranged coaxially with the first-mentioned one and receivlng the jet escaping from said nozzle; a third pi branching ofi said second pipe and extending upwardly in said receptacle and serving to conduct the mixture of compressed air and whirled-up pulverulent material to the said second pipe under the sucking action of the said nozzle, substantially as set forth.

2. An atomizing device for pulverulent material, comprising, in combination, a vessel adapted to receive said material, a pipe passing through" said vessel and forming a nozzle at its end and havin a few small apertures, means for introducing compressed air into said pipe from the other end, a second pipe arranged co-axially with the firstmentloned one and receiving the jet escaping from said nozzle; a third pipe branching off said second pipe and extending upwardly in said receptacle and serving to conduct the mixture of compressed air and whirledup pulverulent material to the said second pipe under the sucking action of the said nozzle, a funnel-shaped casing at the free end of said third pipe, and a sieve over the open end of said latter casing, substantially as set forth.

In testimony whereof I affix my signature.

ERICH GREISER. 

